updating after softmodding

Hello,

I softmoded my wii a long time ago, but I did it in such a crappy way now I have some unnecessary channels that dont even work. for instance, I have two channels for the usbloader that dont load the usbloader and I have to go to HBC. I softmodded another wii last week and this one was a way cleaner mod and everything looked way nicer.

So, I was wondering if there was a way to get rid of all the useless channels I don't even use (usbloader and other useless channels) and get better versions of the apps I already have. I'm guessing updating the apps is as easy as putting the latest update of the app into the card and replace the old version. but what about the channels?